Yes, but when such a bot is set on a computer that is always online 24/7, for years, such as on a mining rig, even dozens of such bots can be running on said machine, checking transactions in the mempool every second for interesting puzzle addresses, being prepared for RBF, and it will have a close to nil impact on the overall function of such build. So it is no big deal for said bot even if it runs and waits for long years, the potential profit is tempting, and the cost of running it is absolutely negligible, as such a mining rig would be online 24/7 anyway, computing other things, while the bot is lurking for prey.